From atop the Matterhorn, admire the fossilized Triassic reef and volcanic rocks comprising the Sacajawea-Matterhorn Ridge, in the Wallowa Mountains, Eagle Cap Wilderness, in the Columbia Plateau of northeastern Oregon, USA. From Wallowa Lake Trailhead, I hiked 7.7 miles one way with 3200 feet gain to Ice Lake plus 3.7 miles round trip with 2000 feet ascent and descent to Matterhorn Peak. I tented overnight at Ice Lake before returning 7.7 miles to the trailhead.
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